/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshBakeFunctions.h
struct FGeometryScriptBakeType_MultiTexture : public [FGeometryScriptBakeTypes](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptBakeTypes)
TArray<TObject...
MaterialIDSourceTextures
For each material ID, the source texture that will be resampled in that material's region
int
SourceUVLayer
UV channel to use for the source mesh texture